进行沟通时,受众的范畴主要包括()
A、最初对象;
B、守门人;
C、主要受众;
D、次要受众;
E、意见领袖;
F、关键决策者
参考答案:A, B, C, D, E, F
So far, several ships have been reported missing _______ the coast of Bermuda Island.
A.off
B.along
C.on
D.around
发动机转速升高时,点火提前角会()
A.减少
B.不变
C.增大